Stove



(No Model.)

7 J. T. LAMBERT.

Stove.

No. 231,819. Patented Aug. 31,1880.

UNITED STATES PATENT OFFICE.

JAMES T. LAMBERT, OF DETROIT, MICHIGAN.

STOVE.

SPECIFICATION forming part of Letters Patent No. 231,819, dated August31, 1-880.

' Application filed June 25, 1880. (No model.)

To all whom it may concern:

Be it known that I, JAMES T. LAMBERT, of Detroit, in the county of Wayneand State of Michigan, have invented an Improvement in Base-BurningRevertible-Flue Heating Stoves, of which the following is aspecification.

The nature of my invention relates to certain new and useful improvements in that class ofstoves called base-burnin g and rcvertiblefluestoves, by means of which a more perfect combustion of the coal and itsresultant gases is obtained than is had in stoves as ordinarilyconstructed, and by which the coal is prevented from clogging orstickingin the magazine.

Theinvention is more especially adapted to stoves in which soft orbituminous coal is em ployed as fuel.

Soft or bituminous coal in the magazine of a stove of the class underconsideration cakes and swells, and is apt to stick in the magazine andnot feed down by gravity to supply the firepot below; and one part of myinvention consists in providing means for forcing the coal down when itis found thatit will not feed by its own gravity..

My invention further consists in the new and novel construction of thestove as a whole, as more fully hereinafter described.

Figurel is a vertical central section of my improved stove from front torear. Fig. 2 is a cross-section on the line no a; in Fig. 1.

In the accompanying drawings, which form a part of this specification, Arepresents the hollow base, connected with the downward flue B and theascending flue O, in the usual manner. The descending flue communicateswith the space D, surrounding the fire-pot E, by means of the opening a,and when a direct draft is desirecL-that is, when the products ofcombustion are not to be passed through the hollow base-it is obtainedby opening the damper b, which discloses the opening 0 in the fluedivision-strip cl, thereby allowing a direct communication with the exita.

F is the ash-pan. G is the fire-bed, preferably a solid circular irondisk supported by proper legs, h, upon the inner walls of the ashpitsection. E is the firepot, supported upon or by the wall of the ash-pitsection H, so that there is no communication between the latter and thecombustion-chamber-I except through the lire-pot.

J is a chamber extending across the top of the descending fine, and thebottom t" of this chamber forms the top of said line and extends to therear side of the tire-pot, thereby forming a deflecting plate to guidethe products of combustion through the opening a. The wall of thecombustion-chamber I forms the front wall of the chamber.

K is the top plate of the chamber, and it extends rearward to form thecap of the ascending flue, which is enlarged at top as shown, by theforward curvature of the division fluestrip 61 (which forms the rearwall of the chamber) and the rearward curve of the back flueplate, I,thus forming another chamber over which the plate K extends. Over thislatternamed chamber, and in the top plate, there may be a boiler-hole,m, if desired, and the collared exit 6.

The ends of the chamberJ are perforated to admit the outer air into therear part thereof, and in front of the perforations is placed the stripor plate 0, extending nearly to the top of the chamber, to prevent thetoo-rapid passage of the air into the combustion-chamber through theopening 19, which affords 'commu- 8o nication between thecombustion-chamber and the chamber J.

After the fire is started in the stove the direct draft should beclosed, as well as the usual draft-openings in the ash-pit doors, whenthe air will enter the chamber J through the perforations inits ends,will becomehighlyheated, pass into the combustion chamber, mingle withthe gases therein, and, being within the draftforce, will be drawndownward through the 0 incandescent coal in the fire-pot, so that thegases will be entirely consumed.

It will be noticed that the tire-bed is supported at some littledistance below the bottom of the fire-pot. This is to allow, under the 5downward draft, the currents to pass out from the bottom of the firepotwithout being brought so largely into contact with the tirebed.

K is the outer wall of the magazine-section, I00 and L the magazine,with a flaring mouth opening downwardly and centrally into thecombustion-chamber, and having preferably three vertical and elongatedopenings, 8, at

- equal distances apart.

M represents a ratchet-bar with a downward pitch of its teeth, designedto fit the openings 8, the points of the ratchet-teeth being flush, ornearly so, with the inner face of the magazine. These bars are eachpivoted to two links, a, the opposite ends of which are pivoted. to theinner side of the outer wall of the stove in such manner, substantiallyas shown, that when forced inward the links form radial bars and give adownward motion to the bars, thereby loosening the coal in the magazineand forcing itto feed downward into the fire-pot. These bars may beconnected together by a suitable yoke, so as to be operatedsimultaneously, or they may be operated singly from outside the 'stoveby any desirable and proper means.

WVhat I claim as my invention is- 1. In a base-burning revertible-fluestove, an air-heatin g chamber with perforated ends communicatingdirectly with the outer air and provided with the opening 19 anddivisionplate 0, said air-chamber being situated above the top of thedescending flue and below the top of the ascending flue andcommunicating with the combustionchamber, substantially as and for thepurposes set forth.

2. In a base-burning stove, the combination, with the fire-pot- F,surrounded by the space D, and the deflecting-plate i, forming adivision between said space and the air-cham- 'ber, of the descendingfine 13, damper b, and

parallel ascending flue O, substantially as described, and for thepurpose set forth.

3. The combination, with the air-heating chamber J, having endperforations communieating with the outer air, and opening 19, bottomplate, 2', forming a division between the air chamber and space aroundthe fire-pot, combustionchamber I, fire-pot E, surrounded by the spaceD, descending flue B, damper I), 1

and parallel ascendingflue (l, substantially as described, and for thepurpose set forth.

4. In a stove, the combination of a fire-pot, a fire-bed, a descendingflue having no communication with the combustion chamber above thefire-pot and having communication with the space surrounding thefire-pot, a hollow base, an ascending flue having communication with thedescending flue by means of a dampered opening between the two saidflues, with an air-heating chamber in rear of the combustion -chamber,above the descending flue and below the top of the ascending flue,constructed, arranged, and operating substantially as and for thepurposes set forth.

5. In abase-burning heatingstove having a magazine provided withvertical openings, the ratchet-bars having a radial movement,substantially as and for the purposes described.

JAMES 'l. LAMBERT.

Witnesses H. S. SPRAGUE, TI-IEO. S. DAY.

